
arXiv: 1106.6090
The most distant quasar yet discovered sets constraints on the formation mechanism of black holes. Its light spectrum has tantalizing features that are expected to be observed before the reionization epoch ended.
4 pages, 1 figure, Nature News & Views article accompanying letter by Mortlock et al
astronomy, Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, physics, Astrophysics - Cosmology and Nongalactic Astrophysics
astronomy, Cosmology and Nongalactic Astrophysics (astro-ph.CO), FOS: Physical sciences, physics, Astrophysics - Cosmology and Nongalactic Astrophysics
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